diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index 17fa08fd8a..7b73588bd1 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -1176,8 +1176,10 @@ public class Blocks implements ContentList{
                 amount = 12;
                 rotateSpeed = 0.5f;
                 layerSpeed = -0.9f;
-            }}, new DrawMultiWeave(), new DrawBlock(), new DrawHeatInput(), new DrawHeatRegion("-vents"){{
-                heatColor.a = 1f;
+            }}, new DrawMultiWeave(){{
+                glowColor = new Color(1f, 0.4f, 0.4f, 0.8f);
+            }}, new DrawBlock(), new DrawHeatInput(), new DrawHeatRegion("-vents"){{
+                heatColor = new Color(1f, 0.4f, 0.3f, 1f);
             }});
             iconOverride = new String[]{"-bottom", ""};
 
diff --git a/core/src/mindustry/world/blocks/production/GenericCrafter.java b/core/src/mindustry/world/blocks/production/GenericCrafter.java
index 24c7b62d20..4ebbf3a217 100644
--- a/core/src/mindustry/world/blocks/production/GenericCrafter.java
+++ b/core/src/mindustry/world/blocks/production/GenericCrafter.java
@@ -179,7 +179,7 @@ public class GenericCrafter extends Block{
             if(consValid()){
 
                 progress += getProgressIncrease(craftTime);
-                totalProgress += delta();
+                totalProgress += delta() * efficiency();
                 warmup = Mathf.approachDelta(warmup, warmupTarget(), warmupSpeed);
 
                 if(Mathf.chanceDelta(updateEffectChance)){